7b+9=3+4b

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Solution for 7b+9=3+4b equation: 



7b+9=3+4b

We move all terms to the left:

7b+9-(3+4b)=0

We add all the numbers together, and all the variables

7b-(4b+3)+9=0

We get rid of parentheses

7b-4b-3+9=0

We add all the numbers together, and all the variables

3b+6=0

We move all terms containing b to the left, all other terms to the right

3b=-6

b=-6/3

b=-2

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